Office chair



FIG. 1 is a perspective view of an office chair showing my new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is an enlarged, detailed view of the portion taken at line-9shown in FIG. 1; and,

FIG. 10 is an enlarged, detailed view of the portion taken at line-10shown in FIG. 2.

The broken lines in the drawings depict portions of the office chairthat form no part of the claimed design.

CLAIM The ornamental design for an office chair, as shown and described.